CN103982585A - Dual-acting low-speed two-stage valve system structure of shock absorber - Google Patents
Dual-acting low-speed two-stage valve system structure of shock absorber Download PDFInfo
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- CN103982585A CN103982585A CN201410242032.2A CN201410242032A CN103982585A CN 103982585 A CN103982585 A CN 103982585A CN 201410242032 A CN201410242032 A CN 201410242032A CN 103982585 A CN103982585 A CN 103982585A
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Abstract
The invention discloses a dual-acting low-speed two-stage valve system structure of a shock absorber. The valve system structure comprises a structure outer shell, a piston cylinder bore is arranged in the structure outer shell, a piston rod piston assembly and a cylinder bore bottom valve assembly are arranged in the piston cylinder bore, and the cylinder bore bottom valve assembly is mounted at the tail end of the piston cylinder bore. According to the dual-acting low-speed two-stage valve system structure of the shock absorber, the two-stage valve piston rod piston assembly and the cylinder bore bottom valve assembly of an extremely-low speed valve are used, the adverse effect caused by discontinuous variation when a traditional piston valve is changed to a high speed section from a low speed section is removed, and when the action speed is low, stable damping force is generated. The affecting factors of the stability and the uniformity of the damping force value of the shock absorber are correspondingly reduced, and the uniformity is good. The riding comfort and steering stability are good.
Description
Technical field
The invention belongs to a kind of vibration damping equipment, be specifically related to a kind of vibration damper double-action low speed two-stage valve architecture.
Background technique
The low damping force of vibration damper contributes to ride comfort, so this specific character has its benefit, but on not connecting a little, strong drastic change, so have adverse influence to ride comfort.And, if do not produce damping force in low speed field, slowly shaking of car body can not be suppressed, and cambic attitude variation can not be suppressed, so cause strenuous vibration, become the reason that affects ride comfort.
Conventional piston valve changes and does not recur when changing between high velocity between low velocity zone, causes poor, the conforming influence factor of damping force value stabilization of vibration damper more, and passenger is as one wishes not to the utmost in ride comfort, car body steering stability.
Summary of the invention
The object of this invention is to provide a kind of vibration damper double-action low speed two-stage valve architecture, can eliminate conventional piston valve and change the discontinuous adverse effect of bringing when changing between high velocity between low velocity zone, when movement speed is low, produce stable damping force.
For achieving the above object, the technical solution used in the present invention is:
This valve architecture comprises structural housing, is provided with piston bore in structural housing, and piston rod piston assembly and cylinder barrel bottom valve assembly are installed in piston bore, and cylinder barrel bottom valve assembly is arranged on piston bore end.
Preferably, piston rod piston assembly comprises piston rod, and the upper cover of piston rod plug assembly of taking over a job is positioned at piston assembly left end socket circulation valve block and elastic valve plate on piston rod; On piston rod, be positioned at piston assembly right-hand member socket valve seat, two opening valve blocks, two little valve blocks and a plurality of recovery valve block, connect valve seat, opening valve block, little valve block and recovery valve block and be axially fixed at piston assembly right side by pad and nut.
Preferably, cylinder barrel bottom valve assembly comprises bottom valve valve seat, and bottom valve valve seat one end connects piston bore end, the other end linkage structure shell; Bottom valve valve seat left end connects bottom valve circulation valve block and bottom valve elastic valve plate; Bottom valve valve seat right-hand member connects the little valve block of bottom valve, bottom valve compression valve block and bottom valve opening valve block.
Preferably, the little valve block of bottom valve, bottom valve compression valve block, bottom valve opening valve block, bottom valve circulation valve block and bottom valve elastic valve plate are connected on bottom valve valve seat with rivet.
The beneficial effect that this vibration damper double-action low speed two-stage valve architecture produces is: the two-stage valve piston bar piston assembly and the cylinder barrel bottom valve assembly that use utmost point low speed valve, eliminate conventional piston valve and changed the discontinuous adverse effect of bringing when changing between high velocity between low velocity zone, when movement speed is low, produce stable damping force.The damping force value stabilization of vibration damper, the corresponding minimizing of conforming influence factor, conformity is better.In ride comfort, steering stability exhibits excellent.
Accompanying drawing explanation
Fig. 1 is an embodiment's of a kind of vibration damper double-action low speed two-stage valve architecture of the present invention structural representation.
Fig. 2 is conventional piston valve damping force characteristic linear graph.
Fig. 3 is a kind of vibration damper double-action low speed two-stage valve architecture piston valve damping force characteristic linear graph of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
With reference to figure 1, Figure 1 shows that an embodiment's of a kind of vibration damper double-action low speed two-stage valve architecture of the present invention structural representation.In the present embodiment, this valve architecture comprises structural housing 1, in structural housing 1, be provided with piston bore 2, the interior installation piston rod of piston bore 2 piston assembly 3 and cylinder barrel bottom valve assembly 14, cylinder barrel bottom valve assembly 14 is arranged on piston bore 2 ends, uses two-stage valve piston bar piston assembly and the cylinder barrel bottom valve assembly of utmost point low speed valve, has eliminated conventional piston valve and has changed the discontinuous adverse effect of bringing when changing between high velocity between low velocity zone, when movement speed is low, produce stable damping force.The flow direction of A fluid when stretching for piston rod, the flow direction of B fluid when compressing for piston rod.
With reference to figure 1, in one embodiment of the invention, piston rod piston assembly 3 comprises piston rod 4, is socketed piston assembly 7 on piston rod 4, is positioned at piston assembly 7 left end socket circulation valve block 5 and elastic valve plates 6 on piston rod 4; On piston rod 4, be positioned at piston assembly 7 right-hand members sockets valve seats 8, two opening valve blocks 9, two little valve blocks 10 and a plurality of recovery valve blocks 11, connect valve seat 8, opening valve block 9, little valve block 10 and restore valve block 11 and be axially fixed at piston assembly 7 right sides by pad 12 and nut 13.
With reference to figure 1, in one embodiment of the invention, cylinder barrel bottom valve assembly 14 comprises bottom valve valve seat 19, and bottom valve valve seat 19 one end connect piston bore 2 ends, the other end linkage structure shell 1; Bottom valve valve seat 19 left ends connect bottom valve circulation valve block 20 and bottom valve elastic valve plate 21; Bottom valve valve seat 19 right-hand members connect the little valve block 16 of bottom valve, bottom valve compression valve block 17 and bottom valve opening valve block 18.
With reference to figure 1, in one embodiment of the invention, the little valve block 16 of bottom valve, bottom valve compression valve block 17, bottom valve opening valve block 18, bottom valve circulation valve block 20 and bottom valve elastic valve plate 21 use rivets 15 are connected on bottom valve valve seat 19.
The basic functional principle of this vibration damper double-action low speed two-stage valve architecture is as follows:
1, the working principle of vibration damper under recovery operating mode:
While moving, be called recovery stroke on piston rod drive piston assembly stretches relative piston bore.Now the volume due to epicoele reduces, and the volume of cavity of resorption increases, and makes the working pressure of epicoele higher than cavity of resorption, and the working solution of epicoele is closed flowing valve, rebuilt valve is opened by the backward cavity of resorption of rebuilt valve throttling and flowed and produce recovery (stretching) resistance.
(1), recovery, compression valve operating mode under lower-speed state:
Rebuilt valve operating mode: when piston assembly makes progress low-speed motion, the fluid of piston assembly epicoele, the first rank enter cavity of resorption by recovery hole, valve seat orifice and two place's opening valve block upper shed concentrated flows of rebuilt valve, and second-order, along with compressing valve seat inner ring restores valve block, makes to flow into cavity of resorption after valve block distortion.Form vibration damper low speed two-stage recovery damping force.
Compression valve operating mode: because rebuilt valve cavity of resorption increases because of volume, and occur pressure reduction between oil storage cylinder, so the recuperation valve that the fluid of oil storage cylinder is pushed open on bottom valve flows into cavity of resorption, to supply cavity of resorption, make the unlikely idle running that occurs of compression stroke after a while.
(2), recovery, compression valve operating mode under high speed state:
When piston assembly makes progress middling speed motion, because piston assembly upper cavity pressure increases, valve block is restored in compressing, make valve block distortion, until open rebuilt valve, fluid is by the recovery hole of the hole on valve seat, rebuilt valve, and the gap that restore after valve block distortion downwards compressing valve seat outer ring flows into cavity of resorption.The pressure reduction of opening after valve is the basis that produces vibration damper middling speed recovery damping force.
When piston makes progress high-speed motion, rebuilt valve standard-sized sheet, makes the recovery hole area equivalence on rebuilt valve aperture and rebuilt valve, forms rebuilt valve maximum opening.At this moment the fluid damping formation high-speed damping power that hole produces is restored in working pressure equivalence.
2, the working principle of vibration damper under compression condition
When piston rod drives piston assembly to compress relative clutch release slave cylinder to move down, be called compression stroke.Now the volume of epicoele increases, and the volume of cavity of resorption reduces, and makes the working pressure of cavity of resorption higher than cavity of resorption, and the working solution of cavity of resorption is closed rebuilt valve, and flowing valve is opened, and the working solution of cavity of resorption is flowed and is full of epicoele to epicoele by flowing valve.
(1), recovery, compression valve operating mode under lower-speed state:
Compression valve operating mode: during the downward low-speed motion of piston assembly, the fluid of compression valve epicoele, by normal open hole (being compression valve opening valve block upper shed groove) the inflow shoe cream room of compression valve seat upper end.The throttling of normal open hole produces fluid damping and forms vibration damper low speed compression damping power.
Rebuilt valve operating mode: due to the pressure increase of compression valve epicoele, fluid is pushed the flowing valve on rebuilt valve open, supplies epicoele fluid, makes the unlikely idle running that occurs of recovery stroke after a while.
(2), recovery, compression valve operating mode under high speed state:
During the downward middling speed motion of piston assembly, because compression valve upper cavity pressure increases, compressing compression valve seat moves downward, making to compress valve block is inwardly out of shape, until open compression valve, fluid is by compressing hole on compression valve seat, and the gap from compression valve seat and compression valve block are out of shape downwards flows into cavity of resorption.Cracking pressure has produced vibration damper middling speed and even to the compression damping power of high speed transition.
During the downward high-speed motion of piston, compression valve standard-sized sheet, makes the compressing hole area equivalent on compression valve aperture and compression valve seat, forms compression valve maximum opening.At this moment the fluid damping that working pressure equivalent compress through hole produces forms high speed compression damping force.
Fig. 2 is conventional piston valve damping force characteristic linear graph.In the figure, damping force characteristic comprises I, J and K three phases, and in the I stage, the absorber damping force of low-speed stage changes with the hole size in opening valve block gap; In the J stage, the absorber damping force in middling speed stage is along with valve seat outer ring is restored throttle slice thickness and changes; In the K stage, high speed stage absorber damping force changes along with restoring the hole area size in hole.
Fig. 3 is a kind of vibration damper double-action low speed two-stage valve architecture piston valve damping force characteristic linear graph of the present invention.In the figure, damping force characteristic comprises C, D, E and F four-stage, and in the C stage, the absorber damping force of low-speed stage changes with the hole area size in low speed two opening valve block gaps, place, in the D stage, the absorber damping force of low-speed stage restores throttle slice thickness with low speed valve seat inner ring to be changed; In the E stage, the absorber damping force in middling speed stage restores throttle slice thickness with low speed valve seat inner ring to be changed; In the F stage, the absorber damping force of high speed stage is with changing along with restoring the hole area size in hole.
Above-mentioned mode of execution is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change that the present invention is made, all fall into protection scope of the present invention.
Claims (4)
1. a vibration damper double-action low speed two-stage valve architecture, it is characterized in that: this valve architecture comprises structural housing (1), in described structural housing (1), be provided with piston bore (2), piston rod piston assembly (3) and cylinder barrel bottom valve assembly (14) are installed in described piston bore (2), and described cylinder barrel bottom valve assembly (14) is arranged on described piston bore (2) end.
2. valve architecture according to claim 1, it is characterized in that: described piston rod piston assembly (3) comprises piston rod (4), the upper socket of described piston rod (4) piston assembly (7), is positioned at described piston assembly (7) left end socket circulation valve block (5) and elastic valve plate (6) on described piston rod (4); On described piston rod (4), be positioned at described piston assembly (7) right-hand member socket valve seat (8), two opening valve blocks (9), two little valve blocks (10) and a plurality of recovery valve block (11), described in connect valve seat (8), opening valve block (9), little valve block (10) and recovery valve block (11) and be axially fixed at described piston assembly (7) right side by pad (12) and nut (13).
3. valve architecture according to claim 1 and 2, it is characterized in that: described cylinder barrel bottom valve assembly (14) comprises bottom valve valve seat (19), described bottom valve valve seat (19) one end connects described piston bore (2) end, and the other end connects described structural housing (1); Described bottom valve valve seat (19) left end connects bottom valve circulation valve block (20) and bottom valve elastic valve plate (21); Described bottom valve valve seat (19) right-hand member connects the little valve block of bottom valve (16), bottom valve compression valve block (17) and bottom valve opening valve block (18).
4. valve architecture according to claim 3, is characterized in that: the little valve block of described bottom valve (16), bottom valve compression valve block (17), bottom valve opening valve block (18), bottom valve circulation valve block (20) and bottom valve elastic valve plate (21) are connected on described bottom valve valve seat (19) with rivet (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242032.2A CN103982585A (en) | 2014-06-04 | 2014-06-04 | Dual-acting low-speed two-stage valve system structure of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242032.2A CN103982585A (en) | 2014-06-04 | 2014-06-04 | Dual-acting low-speed two-stage valve system structure of shock absorber |
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| CN103982585A true CN103982585A (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410242032.2A Pending CN103982585A (en) | 2014-06-04 | 2014-06-04 | Dual-acting low-speed two-stage valve system structure of shock absorber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469702A (en) * | 2017-09-07 | 2019-03-15 | 斯塔比卢斯有限责任公司 | Damper, rotatable photovoltaic panel component and the related method for reducing vibration |
| CN112797104A (en) * | 2021-02-03 | 2021-05-14 | 四川宁江山川机械有限责任公司 | Micro-amplitude response structure and shock absorber |
-
2014
- 2014-06-04 CN CN201410242032.2A patent/CN103982585A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469702A (en) * | 2017-09-07 | 2019-03-15 | 斯塔比卢斯有限责任公司 | Damper, rotatable photovoltaic panel component and the related method for reducing vibration |
| CN112797104A (en) * | 2021-02-03 | 2021-05-14 | 四川宁江山川机械有限责任公司 | Micro-amplitude response structure and shock absorber |
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Application publication date: 20140813 |
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| WD01 | Invention patent application deemed withdrawn after publication |